ACDELCO
More Information for ACDELCO 16559M
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ACDELCO 16559M Specifications
Clamps IncludedNo
ColorBlack
End 1 Inside Diameter (IN)0.630
End 1 Inside Diameter (MM)16.00
End 2 Inside Diameter (IN)0.720
End 2 Inside Diameter (MM)18.00
Hose MaterialRubber
Hose ShapeMolded Assembly
Length (MM)516.00
MaterialRubber
Universal Or Specific FitSpecific
Gold / Professional; Molded
AcDelco hoses are highly resistant to kinks and collapse and feature heavy walls, which offer superior resistance to abrasion and electrochemical degradation.
Signs it is Time to Replace Your Heater Hose(s)

Prevent system contamination and coolant leaks that could cause your engine to overheat by checking for these common signs of Heater Hose damage / failure:

INTERNAL DAMAGE

Soft / mushy hose ends, usually about 2 inches from the clamp.

Internally Damaged Hose
Internally Damaged Hose
LEAKAGE

Moisture, drips or coolant bleed marks on or around the hose clamps, connectors or hose.

Leak Damaged Hose
Leaking Hose
HEAT DAMAGE

Slight swelling, or a hardened, glossy cover that is covered with cracks.

Heat Damaged Hose
Heat Damaged Hose
OZONE DAMAGE

Tiny, parallel cracks in the cover, usually at hose bends.

Ozone Damaged Hose
Ozone Damaged Hose
ABRASION DAMAGE

Rubbing marks on, or damage to the hose cover.

Abrasion Damaged Hose
Abrasion Damaged Hose
OIL CONTAMINATION

Soft or spongy to the touch - bulges and swelling are readily apparent.

Oil Damaged Hose
Oil Contaminated Hose
Videos

Tips for Identifying Hose Wear | ACDelco Garage

ACDelco Quality

ACDelco breaks down their premium portfolio of Original Equipment and Aftermarket parts into two tiers: GM Original Equipment and ACDelco Gold.

GM ORIGINAL EQUIPMENT
GM Original Equipment parts are the true OE parts installed during production or validated by GM—designed, engineered, and tested to rigorous standards and backed by General Motors.
ACDELCO GOLD (PROFESSIONAL)
ACDelco Gold parts are the high-quality alternative to OE parts, manufactured to meet GM expectations for fit, form, and function and backed by General Motors.


OEM / Interchange Numbers: 89033585

Warranty Information:
Limited Lifetime
Warranty Details